So iv'e been trying to conceive for 15 months without success, i'm 38. For a while now i have been having irregular periods and have had a few day 21 blood tests which have always shown that i haven't ovulated. anyway, this cycle i had my day 21 test which showed that as usual i haven't ovulated. My doctor advised me to have it repeated on day 28. My period didn't arrive on day 28, which was Monday. When i phoned for my results i was surprised to be told that i have indeed ovulated and that my progesterone was at a good level. I must have ovulated somewhere between days 21 and 28 so when would my period be likely to arrive ? I am getting very anxious as i have a n appointment in just under 2 weeks time at the infertility clinic where the nurse was possibly going to start me on Clomid and the reason for my panic is that i am meant to be having an HSG to check my tubes are not blocked. That can't be done until cycle day 5 but my period still isn't here so the test is getting delayed! I need to have the HSG before my clinic appointment as i'm worried that the clinic will not want to see me until the HSG has been done and then i may have to wait another 4 months to be seen. It's so tricky to plan as my cycles are irregular. Help!